./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e5fcac2800fa481c87e1ba666bedec539f533fb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:36:54,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:36:54,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:36:54,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:36:54,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:36:54,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:36:54,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:36:54,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:36:54,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:36:54,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:36:54,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:36:54,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:36:54,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:36:54,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:36:54,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:36:54,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:36:54,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:36:54,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:36:54,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:36:54,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:36:54,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:36:54,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:36:54,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:36:54,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:36:54,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:36:54,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:36:54,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:36:54,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:36:54,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:36:54,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:36:54,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:36:54,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:36:54,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:36:54,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:36:54,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:36:54,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:36:54,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:36:54,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:36:54,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:36:54,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:36:54,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:36:54,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:36:54,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:36:54,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:36:54,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:36:54,564 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:36:54,564 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:36:54,564 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:36:54,565 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:36:54,565 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:36:54,565 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:36:54,565 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:36:54,566 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:36:54,566 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:36:54,566 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:36:54,567 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:36:54,567 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:36:54,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:36:54,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:36:54,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:36:54,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:36:54,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:36:54,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:36:54,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:36:54,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:36:54,570 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:36:54,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:36:54,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:36:54,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:36:54,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:36:54,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:36:54,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:36:54,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:36:54,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:36:54,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:36:54,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:36:54,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:36:54,573 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:36:54,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:36:54,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:36:54,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:36:54,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:36:54,574 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e5fcac2800fa481c87e1ba666bedec539f533fb [2020-11-30 03:36:54,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:36:54,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:36:54,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:36:54,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:36:54,876 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:36:54,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2020-11-30 03:36:54,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/data/1304f5c03/f823ceaeb75446f7b2acb24864ba1dc1/FLAGdac78ea2b [2020-11-30 03:36:55,477 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:36:55,478 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2020-11-30 03:36:55,486 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/data/1304f5c03/f823ceaeb75446f7b2acb24864ba1dc1/FLAGdac78ea2b [2020-11-30 03:36:55,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/data/1304f5c03/f823ceaeb75446f7b2acb24864ba1dc1 [2020-11-30 03:36:55,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:36:55,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:36:55,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:36:55,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:36:55,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:36:55,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:36:55" (1/1) ... [2020-11-30 03:36:55,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ca3adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:55, skipping insertion in model container [2020-11-30 03:36:55,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:36:55" (1/1) ... [2020-11-30 03:36:55,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:36:55,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:36:56,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:36:56,091 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:36:56,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:36:56,151 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:36:56,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56 WrapperNode [2020-11-30 03:36:56,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:36:56,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:36:56,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:36:56,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:36:56,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:36:56,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:36:56,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:36:56,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:36:56,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... [2020-11-30 03:36:56,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:36:56,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:36:56,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:36:56,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:36:56,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:36:56,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:36:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:36:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:36:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:36:56,751 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:36:56,752 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 03:36:56,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:56 BoogieIcfgContainer [2020-11-30 03:36:56,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:36:56,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:36:56,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:36:56,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:36:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:36:55" (1/3) ... [2020-11-30 03:36:56,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f557e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:36:56, skipping insertion in model container [2020-11-30 03:36:56,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:36:56" (2/3) ... [2020-11-30 03:36:56,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f557e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:36:56, skipping insertion in model container [2020-11-30 03:36:56,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:56" (3/3) ... [2020-11-30 03:36:56,766 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.c [2020-11-30 03:36:56,780 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:36:56,785 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 03:36:56,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 03:36:56,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:36:56,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:36:56,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:36:56,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:36:56,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:36:56,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:36:56,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:36:56,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:36:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 03:36:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:36:56,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:56,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:36:56,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash 4158921, now seen corresponding path program 1 times [2020-11-30 03:36:56,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:56,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013604149] [2020-11-30 03:36:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013604149] [2020-11-30 03:36:57,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:57,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:36:57,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713141552] [2020-11-30 03:36:57,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:36:57,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:57,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:36:57,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:36:57,092 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-11-30 03:36:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:57,351 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2020-11-30 03:36:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:36:57,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 03:36:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:57,362 INFO L225 Difference]: With dead ends: 78 [2020-11-30 03:36:57,362 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 03:36:57,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 03:36:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-30 03:36:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 03:36:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-30 03:36:57,420 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2020-11-30 03:36:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:57,420 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-30 03:36:57,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:36:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-30 03:36:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 03:36:57,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:57,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 03:36:57,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:36:57,421 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -298057684, now seen corresponding path program 1 times [2020-11-30 03:36:57,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:57,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26712863] [2020-11-30 03:36:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:57,445 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:36:57,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9408380] [2020-11-30 03:36:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:36:57,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:57,629 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:36:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:57,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26712863] [2020-11-30 03:36:57,652 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:36:57,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9408380] [2020-11-30 03:36:57,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:57,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:36:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262529993] [2020-11-30 03:36:57,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:36:57,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:36:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:57,656 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2020-11-30 03:36:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:36:57,817 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-30 03:36:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:36:57,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 03:36:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:36:57,820 INFO L225 Difference]: With dead ends: 47 [2020-11-30 03:36:57,820 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 03:36:57,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:36:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 03:36:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-11-30 03:36:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 03:36:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-30 03:36:57,838 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2020-11-30 03:36:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:36:57,839 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-30 03:36:57,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:36:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-30 03:36:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:36:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:36:57,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:36:58,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 03:36:58,067 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:36:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:36:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1329561423, now seen corresponding path program 1 times [2020-11-30 03:36:58,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:36:58,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203995175] [2020-11-30 03:36:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:36:58,082 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:36:58,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957531147] [2020-11-30 03:36:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:36:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:36:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:36:58,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:36:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:58,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:36:58,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:36:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:36:58,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203995175] [2020-11-30 03:36:58,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:36:58,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957531147] [2020-11-30 03:36:58,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:36:58,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:36:58,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737018319] [2020-11-30 03:36:58,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:36:58,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:36:58,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:36:58,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:36:58,226 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-11-30 03:37:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:00,533 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-11-30 03:37:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:37:00,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-30 03:37:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:00,535 INFO L225 Difference]: With dead ends: 65 [2020-11-30 03:37:00,535 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 03:37:00,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:37:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 03:37:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-30 03:37:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:37:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-11-30 03:37:00,559 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 8 [2020-11-30 03:37:00,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:00,560 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-11-30 03:37:00,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:37:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-11-30 03:37:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 03:37:00,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:37:00,561 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:37:00,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:00,787 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:37:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:37:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash 781835680, now seen corresponding path program 1 times [2020-11-30 03:37:00,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:37:00,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977420819] [2020-11-30 03:37:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:37:00,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:37:00,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901300945] [2020-11-30 03:37:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:37:00,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 03:37:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:37:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:37:00,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:37:00,913 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:37:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:37:00,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977420819] [2020-11-30 03:37:00,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:00,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901300945] [2020-11-30 03:37:00,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1803817308] [2020-11-30 03:37:00,979 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:37:00,979 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:37:00,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:37:00,988 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:37:00,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:37:01,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:01,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:01,687 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:37:01,856 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-11-30 03:37:02,243 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-11-30 03:37:02,454 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:02,662 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 03:37:02,949 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 03:37:03,169 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:03,408 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-30 03:37:03,732 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-11-30 03:37:03,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:03,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:37:03,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-11-30 03:37:03,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079991591] [2020-11-30 03:37:03,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:37:03,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:37:03,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:37:03,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:37:03,736 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-11-30 03:37:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:03,936 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-30 03:37:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 03:37:03,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 03:37:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:03,937 INFO L225 Difference]: With dead ends: 48 [2020-11-30 03:37:03,937 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 03:37:03,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-11-30 03:37:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 03:37:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-30 03:37:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 03:37:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-30 03:37:03,945 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 11 [2020-11-30 03:37:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:03,946 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-30 03:37:03,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:37:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-30 03:37:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 03:37:03,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:37:03,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:37:04,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:04,165 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:37:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:37:04,166 INFO L82 PathProgramCache]: Analyzing trace with hash -275001789, now seen corresponding path program 1 times [2020-11-30 03:37:04,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:37:04,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173501842] [2020-11-30 03:37:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:37:04,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:37:04,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165730277] [2020-11-30 03:37:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:37:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:37:04,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:37:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:37:04,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:37:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:37:04,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173501842] [2020-11-30 03:37:04,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:04,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165730277] [2020-11-30 03:37:04,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250601769] [2020-11-30 03:37:04,334 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:37:04,334 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:37:04,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:37:04,335 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:37:04,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:37:04,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:04,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:04,852 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:37:05,087 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-11-30 03:37:05,534 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-11-30 03:37:05,695 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:05,905 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 03:37:06,111 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 03:37:06,316 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:06,529 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-30 03:37:07,035 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-11-30 03:37:07,039 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:07,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:37:07,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 03:37:07,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041444067] [2020-11-30 03:37:07,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 03:37:07,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:37:07,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 03:37:07,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:37:07,041 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2020-11-30 03:37:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:15,682 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-11-30 03:37:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:37:15,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-30 03:37:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:15,684 INFO L225 Difference]: With dead ends: 78 [2020-11-30 03:37:15,684 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 03:37:15,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-11-30 03:37:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 03:37:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-11-30 03:37:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 03:37:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-30 03:37:15,703 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 13 [2020-11-30 03:37:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:15,704 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-30 03:37:15,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 03:37:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-30 03:37:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 03:37:15,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:37:15,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-11-30 03:37:15,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:15,931 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:37:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:37:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1660600465, now seen corresponding path program 1 times [2020-11-30 03:37:15,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:37:15,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742503111] [2020-11-30 03:37:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:37:15,943 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:37:15,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777297321] [2020-11-30 03:37:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:37:15,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:37:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:37:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:37:16,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:37:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:37:16,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742503111] [2020-11-30 03:37:16,076 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:16,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777297321] [2020-11-30 03:37:16,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293520468] [2020-11-30 03:37:16,079 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:37:16,079 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:37:16,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:37:16,079 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:37:16,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:37:16,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:16,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:37:16,440 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:37:16,681 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-11-30 03:37:17,041 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-11-30 03:37:17,171 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:17,386 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-11-30 03:37:17,736 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 03:37:17,935 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-30 03:37:18,217 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-30 03:37:18,604 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-11-30 03:37:18,606 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:37:18,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:37:18,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-30 03:37:18,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55723224] [2020-11-30 03:37:18,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:37:18,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:37:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:37:18,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:37:18,608 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-11-30 03:37:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:37:18,666 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-11-30 03:37:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:37:18,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 03:37:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:37:18,668 INFO L225 Difference]: With dead ends: 54 [2020-11-30 03:37:18,668 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:37:18,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:37:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:37:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:37:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:37:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:37:18,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-30 03:37:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:37:18,670 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:37:18,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:37:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:37:18,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:37:18,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:37:18,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:37:19,040 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-11-30 03:37:19,185 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-30 03:37:19,310 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-30 03:37:19,454 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-30 03:37:19,692 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-30 03:37:19,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,695 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-30 03:37:19,695 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,696 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-30 03:37:19,696 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,696 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-30 03:37:19,696 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,696 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 3) (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1))) [2020-11-30 03:37:19,696 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,697 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-11-30 03:37:19,697 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:37:19,698 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-30 03:37:19,698 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,699 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,700 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:37:19,700 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 1))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse1 (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-30 03:37:19,700 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 03:37:19,700 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:37:19,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:37:19 BoogieIcfgContainer [2020-11-30 03:37:19,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:37:19,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:37:19,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:37:19,726 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:37:19,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:36:56" (3/4) ... [2020-11-30 03:37:19,729 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:37:19,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 03:37:19,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 03:37:19,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:37:19,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:37:19,803 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4f95ae67-672e-44f8-bea0-e5d5d4d9b66d/bin/utaipan/witness.graphml [2020-11-30 03:37:19,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:37:19,804 INFO L168 Benchmark]: Toolchain (without parser) took 23945.78 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 93.7 MB in the beginning and 163.5 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,805 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:37:19,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.88 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 99.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 97.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,806 INFO L168 Benchmark]: Boogie Preprocessor took 29.64 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 97.1 MB in the end (delta: 855.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:37:19,807 INFO L168 Benchmark]: RCFGBuilder took 531.48 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 78.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,807 INFO L168 Benchmark]: TraceAbstraction took 22967.29 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 78.2 MB in the beginning and 166.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 108.3 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,808 INFO L168 Benchmark]: Witness Printer took 78.09 ms. Allocated memory is still 218.1 MB. Free memory was 166.6 MB in the beginning and 163.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:37:19,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.88 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 99.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 97.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.64 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 97.1 MB in the end (delta: 855.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 531.48 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 78.6 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22967.29 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 78.2 MB in the beginning and 166.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 108.3 MB. Max. memory is 16.1 GB. * Witness Printer took 78.09 ms. Allocated memory is still 218.1 MB. Free memory was 166.6 MB in the beginning and 163.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 1 && 1 <= cond) && t == 3) && a * a + a * 4 + 2 == t + s) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((0 <= n && s == 1) && a == 0) && n <= 1) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: t * 2 + t * t + 1 == s * 4 && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 165 SDslu, 170 SDs, 0 SdLazy, 260 SolverSat, 77 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 47 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 247 HoareAnnotationTreeSize, 7 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 9818 SizeOfPredicates, 21 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 25/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...